Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time

doi:10.1364/ao.58.008118

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所 > 中科院长春光机所知识产出

	Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time
	S.T.Chang; Z.Li
刊名	Applied Optics
	2019
卷号	58 期号:29 页码:8118-8125
关键词	nonuniformity correction,radiation,radiance,camera,gain,Optics
ISSN号	1559-128X
DOI	10.1364/ao.58.008118
英文摘要	Midwave infrared systems with cooled detectors are generally used for high-precision or quantitative measurement, such as radiometry and thermometry. As a basis of these applications, radiometric calibration aims to obtain the relationship between the infrared images and the incident radiant flux generated by the scene or targets. Conventional radiometric calibration algorithms do not take the influences of integration and ambient temperature into consideration. As a consequence, the accuracy of calibration deteriorates whenever the temperature or the integration time varies. To solve this problem, we analyzed the effects of integration time and ambient temperature on coefficients of the radiometric calibration formula by theoretical and experimental analysis. Then, a radiometric calibration method is deduced to remove the variation of integration time and ambient temperature on the accuracy of calibration and radiometry. Several radiometric calibration experiments were conducted using a midwave infrared camera inside a chamber with controllable temperature. The results indicate that the proposed calibration algorithm is more effective and accurate, compared with conventional calibration methods, in complicated working conditions with variable integration times and ambient temperatures. (C) 2019 Optical Society of America
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/63467]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出
推荐引用方式 GB/T 7714	S.T.Chang,Z.Li. Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time[J]. Applied Optics,2019,58(29):8118-8125.
APA	S.T.Chang,&Z.Li.(2019).Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time.Applied Optics,58(29),8118-8125.
MLA	S.T.Chang,et al."Calibration algorithm for cooled mid-infrared systems considering the influences of ambient temperature and integration time".Applied Optics 58.29(2019):8118-8125.